https://community.qlik.com/t5/Talend-Studio/how-to-generate-unique-random-value/m-p/2242118#M29047 What type of random unique value do you need? If it is a number, is there any reason why a sequence would not work? A sequence would produce unique values, although not random. <BR />If it is a random alphanumeric value you need, why not use&nbsp; <FONT color="#000000">java.util.UUID?&nbsp;</FONT>You can see how to use this here ( <A href="http://docs.oracle.com/javase/6/docs/api/java/util/UUID.html" rel="nofollow noopener noreferrer">http://docs.oracle.com/javase/6/docs/api/java/util/UUID.html</A>). Tue, 06 Oct 2015 13:46:57 GMT Anonymous 2015-10-06T13:46:57Z https://community.qlik.com/t5/Talend-Studio/how-to-generate-unique-random-value/m-p/2242116#M29045 i want generate unique random value<BR />so i used tRowgenerator and numeric.random()<BR />but i dont get unique value &nbsp;how to generate unique random value(integer value)? Tue, 06 Oct 2015 02:14:40 GMT https://community.qlik.com/t5/Talend-Studio/how-to-generate-unique-random-value/m-p/2242116#M29045 Anonymous 2015-10-06T02:14:40Z https://community.qlik.com/t5/Talend-Studio/how-to-generate-unique-random-value/m-p/2242117#M29046 Hello, have you checked if tAddCRCRow works for you? The tAddCRCRow "<FONT size="2"><FONT face="noto, Helvetica, Arial, sans-serif">calculates a surrogate key based on one or several columns and adds it to the defined schema.</FONT></FONT>"&nbsp; Tue, 06 Oct 2015 13:31:14 GMT https://community.qlik.com/t5/Talend-Studio/how-to-generate-unique-random-value/m-p/2242117#M29046 Luiz_Filipe 2015-10-06T13:31:14Z https://community.qlik.com/t5/Talend-Studio/how-to-generate-unique-random-value/m-p/2242118#M29047 What type of random unique value do you need? If it is a number, is there any reason why a sequence would not work? A sequence would produce unique values, although not random. <BR />If it is a random alphanumeric value you need, why not use&nbsp; <FONT color="#000000">java.util.UUID?&nbsp;</FONT>You can see how to use this here ( <A href="http://docs.oracle.com/javase/6/docs/api/java/util/UUID.html" rel="nofollow noopener noreferrer">http://docs.oracle.com/javase/6/docs/api/java/util/UUID.html</A>). Tue, 06 Oct 2015 13:46:57 GMT https://community.qlik.com/t5/Talend-Studio/how-to-generate-unique-random-value/m-p/2242118#M29047 Anonymous 2015-10-06T13:46:57Z